Lugs

lugs - Metal or plastic pieces attached to a ssail's luff that slide in a mast track to allow easy hoisting of the sail.

Mooring with Lugs
Properly used, the lug can be an effective substitute
for a knot. The advantage of this type of fastener is its
resistance to the rubbing that occurs between the cord
and the lug. The technique is simple but must be used ...

Mast Track - A track or groove in the back of the mast to which the sail is attached by means of lugs or the bolt rope.
Master - The Captain of a vessel. Highest officer aboard ship. Oversees all ship operations. Keeps ships records.

Two trunnions or lugs are forged to the lower end of the shank. In Byer's plan (fig. 6) the flukes and crown consist of a steel-casting secured to a forged shank by a through bolt of mild steel, ...

Clean battery posts and cable lugs and coat with a light coating of grease.
Lubricate all Hatch/locker door hinges and latches. Leave doors open.
Remove all drain plugs so any possible water accumulation will drain out.

A slot into which the bolt rope or lugs in the luff of the sail are inserted to attach the sail. Most masts and roller reefing jibs use sail tracks. Systems with 2 tracks can allow for rapid sail changes.
sail trim ...

ears of a bolt - The lugs or upper projections of a bolt with a score in it, into which another part is fitted and held by a through pin so as to form a joint like that of a gooseneck.

Conversely, in the West, the fore-and-aft rig has been under constant development: from the dipping-lug rig based on the old square sails to standing lugs, gaff rigs, and finally to "leg o'mutton" sails, spritsails, and the modern Bermudan rig.

Replace any spring latches with dead-bolt locks.
Install lugs in the hinge plates to prevent removal of the hinge pins.
Place dowels in the tracks of sliding windows or doors.
Consider installing an alarm system.

A track or groove in the back of the mast to which the sail is attached by means of lugs or the bolt rope.
master
The person in charge of a vessel. The captain.

GUDGEONS Lugs cast or forged on the stern post for the purpose of hanging and hinging the rudder. Each is bored to form a bearing for a rudder pintle and is usually bushed with lignum vitae or white bearing metal.